83781214 has 16 divisors (see below), whose sum is σ = 138381696. Its totient is φ = 37725400.

The previous prime is 83781199. The next prime is 83781259. The reversal of 83781214 is 41218738.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 83781214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15442 + ... + 20149.

It is an arithmetic number, because the mean of its divisors is an integer number (8648856).

Almost surely, 2^83781214 is an apocalyptic number.

83781214 is a deficient number, since it is larger than the sum of its proper divisors (54600482).

83781214 is a wasteful number, since it uses less digits than its factorization.

83781214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35711.

The product of its digits is 10752, while the sum is 34.

The square root of 83781214 is about 9153.2078529879. The cubic root of 83781214 is about 437.5713542394.

The spelling of 83781214 in words is "eighty-three million, seven hundred eighty-one thousand, two hundred fourteen".